Zoe paid \( \$ 18.60 \) in sales tax and tips for her dinner. The sales tax rate is \( 11 \% \), and she tipped \( 20 \% \). (The sales tax does not apply to the tip, and the tip is based on the price of the dinner before sales tax.) What was the price of Zoe's dinner, before sales tax and tip?

1) Solve. \( \begin{array}{l}\text { y }=-4 x-3 \\ y=-5 x-6\end{array} \) \( (\square, \square) \) Submit

Resuelve el siguiente sistema de ecuaciones lineales por el método de sustitución, eliminación y igualación: \[ \begin{array}{c}3 x-2 y=7 \\ x+y=4\end{array} \]

Simplify the polynomial, then evaluate for \( x=-3 \). \( -x^{2}+2 x-2 x^{2}-3 x+4+x^{2} \)

How many elements are there in a complete solution to \( x^{2}+7 x+2 \equiv 0(\bmod 41) ? \)

Simplify the following expressions fully: \( 1.2 .1 \quad(x+2)\left(x^{2}-x+3\right) \) \( 1.2 .2 \quad \frac{5}{x+3}-\frac{3}{2-x} \) \( 1.2 .3 \quad \frac{25^{-x} \cdot 15^{x+1}}{3^{x} \cdot 5^{-x}} \)